Lubricating device



G. B. WILSON LUBRICATING DEVICE Filed May 27, 1933 .7.. Www# oct. 19, 1937.

i messedl oct. 19, 1937 2,096,367

y LUBRICATING DEVICE v`George B. Wilson, Erie, Pa.; Edward L. Palmer, Erie, Pa., yguardian of saidGeorge-B. Wilson, incompetent, assignor to a Holding Committee for Service ManufacturingCompany, comprisifing Leonard F. Haag, Karl C.'Eagley,jand Leroy C. Erickson, all of Erie, Pa. l JApplication May 27, 1933, serial No. 673,259

7 Claims." (oreal-47.3)

Thepresent invention is designedto improve lubricating devices, particularly lubricating vde-r vices y`used with relation to lubricator receptacles. Heretofore lubricatingdevices of this type have ated portion of a piston I4 provided with a cup I5 yoperates in an enlarged portion I6 of the cylinder. Springs I'I return the piston I4 after it has been forced forward by reason of the air 5 been provided with air-actuatedpistons operating pressure.v Air is delivered to the cylinder through 5 the'lpum'p'pistonr so as to force a-movementof a passage I8 from la screw-threaded socket I9 lubricantunder high pressure and Valves have in thevbody A3. A fitting 20 is screwed into the 4been providedjfor controlling the operationwof rsocket I9 and a'valve chest 2I is screwed into the piston. lIn an, application filed by Karl Cv. the fitting 20. The valve chest is stepped at 22 Eagley and me, YJune 29, 1932, Ser.r No. 619,937 being larger at the discharge end and a valve 23 is 10 wehave `shown apump of this type connected` slidingly mounted in the chest and operates over with a lubricant receptacle and have provided an exhaustport 24. The valve has an axial openthis' lubricantreceptacle with aplunger, or ioling-25 through it communicating with radial n lov/fer, forcing the` lubricant into the pump. kIn openings y2E; and the radial openings lead to the 1.5 this pump of our former application also we have end ofthe chest by openings 21. The upper end carrieda connection from the fluid supply line of the valve is provided with a cup 28 which is to theupper end of the receptacley so as to de'- .secured by a fitting 29,the fitting 29 having an liver air under pressure to the receptacle and opening 3U continuing theV opening in the valve.

j thusexert pressure on thekr plunger to force a A cap 3| closesthe upper end of the valve chest.

discharge ofthe lubricant to the pump. Itis The tting 29 terminates -with a seating surface 20 preferablein loadingthe lubricant receptacle to at its upper end which operatesV on a seat 32 in remove it fromthe pump body and' load the rethe cap. A minute opening 33 leads through the f' ceptacle fronfrthisendr of the cylinder. The fitting 29 and provides an initial opening for present invention is designed to-simplify the the air. The cap 3| has a screw-threaded end structure soas to permitof the ready'removal 34and a control .Valve body 36 has a similar 25 0fth cylindery and at thesametime simplify the screw thread35by means of whichvit is secured connection leading fromy theair supply tol the to the cap.v It is provided vwith a valve head 31 upper-'fend of the "receptaclef' Features and deoperating from av thumb plate-38. Air is delivered tails of the invention will appear from the s pecithrough a connection 39if desired. y

cationand claims.u v-

' Y f `The .operation of this mechanism is similar 30 A preferredembodimentVr of the invention is to that of .my former application. When the illustrated in, the accompanying drawingsfasfol-y valve 3l is opened, air operating on the end of lows-7 1 j n Y v the valvemoves it downwardly closing the ex- .y 'I'Figffl 4shoirrs afcentral section'` through the haustports 24l and admitting air through the yg5 device'. f 'f 5 Y V passages to the upper end of the cylinder, the air 35 Fig; 2- asectonon the line 2-2 inFig. 1. operating on the piston I4 to operate the pump -'Fig`, -3is an enlarged view inl section of the valve plunger I3, and thus effect a discharge of lubrichamber inthe lower part of the lubricant recepcant. As soon as the Apiston I4 reaches the limit tacle. f l of itsstroke, pressure builds up back of it and I marks the lubricant receptacle.' Y This has a this pressure leading back to the valve chest 40 screwthreaded end 2 rwhich visscrewed into a and operating on vthe discharge end of the valve body 3, a'gasket '4 sealing theY joint. The lubriforces the valvey rearwardly so as to open the cant-is discharged from the receptacle through a exhaust ports 24. Whenlthe air-is exhausted to passage v5 in the body, the lubricant passing a a sufficient eXtent'the valve again moves forward l stainerli and being delivered to a reduced cyland the operation isfrepeated. 45 inder end I'of the pump Acheck valve 8 re- A plunger-40 isi'arranged in the receptacle.

' tards the flow from lthepurnp, the valve being This has theoppcsitely extending cups4I and heldfyieldingly closed? by a spring 9 andthe body 42 and cup securing plates 143 connected by bolts 4 is'provided with' a ttingl by which it may be 44. This plunger is Lslidingly mounted on a rod Slo connected to ravdischar'ge conduit, or other lmeans 45,the cups' having afcentral opening forming a 50 (not shown). `AThe usual ventllisprovided with closurearound the rod 45.A VThe rod 45 has an a.l valve I2 whichpermits venting the discharge opening through it. Thefend 4'I of the rod 45 line, when desired. f seatslonthe backl of a cupABQ'the cup being ar- 'I'hesmallfend I3 ofthe pumppistonoperates ranged in avalve chamber 49. A fitting 50 is in-the;reduced cylinderfendl and-the air-operarrangedin the cup andhas an opening 50a 55 inder and moves the piston I 4 air is admitted through the opening 54 past the cup 52 and through the hollow fitting 50 into the opening 4t in the rod and delivered to the upper end of the receptacle, thus assuring pressure without attention of the operator onthefupper end of:

the plunger. The upper end of thereceptacle is provided with a cap 56 and the rod 45 extendsthrough this cap and is provided with a screw threaded end 5l which is screwed into a handle The handlehas a screw-threaded nend 5 9 which is screwed into a screw-threadedsocket 6U in the cap. The lower end of the rod extends through the upperfend of the chamber, the chamber having a flared opening 45a to receive it so that as the handle is screwed into rplace the lower end of the rod is carried through the opening 45a and seats on the back of the cup 50 forming a closure, the spring taking up any inaccuracies in the length of the rod. The handle seats on a gasket 6l and thus `seals the upper end of the receptacle. The rod is provided with a stop shoulder 52 at its lower end which limits the downward movement of the plunger on the rod, and the opening 46 is provided with a check valve 53, this being the type of valve assembly ordinarily used with pneumatic tires. When the plunger reaches the bottom of the receptacle and itV is desired to re-flll the receptacle, the receptacle is screwed out of the body, the handle screwed out of the cap. The open end of the receptacle is forced into the grease and the plunger is withdrawn by withdrawing the rod and the grease follows the plunger as it is retracted under the influence of exterior air pressure so that when the plunger reachesl its upper position the receptacle is filled with grease and may then be returned tothe body, the rod handle screwed back into the cap and the pump as a whole is ready for operation. Y

By arranging Vthe air connection to the upper end of the plunger so that it permits this ready removal of the body for re-filling a much more convenient arrangement is provided and in as much as the operating rod isdesirable for use in filling the receptacle in any event it performs the added function of forming the connection carrying air tothe upper part' of the receptacle.

What I claim as new is:- l

1. In a lubricating device, the combination of apump body having a pump motor cylinder; a pump motor piston in the cylinder; a pump having a plunger driven by the pump motor piston; a fluid pressure supply means leading to the cylinder; a valve controlling the supply means; a lubricant receptacle having a discharge connection leading to the pump; a follower in the the opening in the rod and preventing a backflow from the chamber to the pump body.

2. In a lubricating device, the combination of y a pump body having a pump motor cylinder; a pump motor piston in the cylinder; a pump havinga plunger Ydriven by the pumpl rnotor piston; a fluid pressure supply means leading to the cylinder; a valve controlling the supply means;

"ialubricant receptacle having a discharge connection leading to the pump; aV follower in the -ward movement of the plunger on the rod and effecting av movement of the follower upon a withdrawal of the rod; means providing a removablevconnection between the receptacle and the body; anda valve mechanism providing av closure between the receptacle and the body, said mechanism comprisinga check preventing a back-flow from the rod. y

3. In a lubricating device, the combinationk of a body having a pump motor cylinder; a pump motor piston in the cylinder; a pumpwhaving a plunger driven by the pump motorpiston; a fluid supply conduitv to the cylinder; a valve carried by thebody controlling the conduit; a receptacle removably mounted on the body, the body having a passage leading from the receptacle to the pump; a follower in the receptacle; and means leading from the body through the follower forming a passage from the fluid supply to the receptacle above the follower, said means being removable with the receptacle.

4. In a lubricating device, the combination of a pump body having a pumpY motor cylinder; a pump motor piston in the cylinder; a pump having a plunger driven by the pump motor piston; a lubricant receptacle detachably secured at its discharge end to the body and having a discharge connection leading to the pump; a fluid pressure supply means comprising passages leading to the cylinder and to the receptacle; a valve controlling the supply means; a ,follower in the receptacle; ahollow operating rod extending` through the follower and detachably vconnected with the uid supply at the body end of the receptacle, said rod being slidingly mounted in the follower and having a shoulder adjacent to itsdischarge end adapted to pick up the follower when the rod is withdrawn, said rod extending through the end of the receptacle oppoa lubricant receptacle detachably secured at itsl discharge end to the body and having a discharge( connection leading to the pump; a iiuid pressure supply means comprising passages leading to the cylinder and to theY receptacle; a valve controlling the suppy means; a follower in thereceptacle; a hollow operating rod extending through the follower and detachably connected with the fluid supply at the body end of the receptacle, said rod beingV slidingly mounted inthe follower and having a shoulder adjacent ,to its discharge end adaptedtopick up the follower when the rod is withdrawn, said rod extending through the end t f of the receptacle opposite the body and having anr opening leading to the receptacle at a point remote from the body; and a check valve closing a back-flow through the rod when the receptacle is removed.

6. In -a lubricating device, the combination of a pump body having a pump motor cylinder; a pump motor piston in the cylinder; a pump having a plunger drivenrby the pump motor piston; a lubricant receptacle detachably secured at its discharge end to the body and having a discharge connection leading to the pump; av fluid pressure supply means comprising passages leading to the cylinder and tothe receptacle; a valve controlling Y the supply means; a follower in the receptacle; a

'hollow operating rod extending through the followerand telescopically connected with the body and connected with the fluid supply, said rod being slidingly mounted in the follower and having a shoulder adjacent its discharge end adapted to pick up the follower when the rod is withdrawn, said rod extending through and having aI screw-threaded connection with the end of the receptacle opposite the body; and a check valve in the connection leading through the rod.

7. In a lubricating device, the combination of a pump body having a pump motor cylinder; a' pump motor piston in the cylinder; a pump having a plunger driven by the pump motor piston; a lubricant receptacle detachably secured at its discharge end to the body and having a discharge connection leading to the pump; a fluid pressure supply means comprising passages leading to theI cylinder and to the receptacle; a valve controlling the supply means; a follower in the receptacle; a hollow operating rod extending through the fol-4 lower and telescopically connected with the body and connected with the uid supply, said rod being slidingly mounted in the follower and having a shoulder adjacent its discharge end adapted to pick up the follower when the rod is withdrawn, said rod extending through and having a screwfthreaded connection with the end of the receptacle opposite the body; a check valve in the connection leading through the rod; and

means sealing the body end of the rod when the rod is screwed into the end of the receptacle.

GEORGE B. WILSON. 

